Damper for hot-air flues



(No Modem G. W. SCHWINN. DAMPER FOR HOT AIR PLUBS.

No. 408,856. Patented Aug. 13, 1889.

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UNITED STATES PATENT OFFICE.

GEORGE IV. S-CHIVINN, OF PHILADELPHIA, PENNSYL-TANIA.

DAMPER FOR HOT-AIR FLUES.

SPECIFICATION forming part of Letters Patent No. 408,856, dated August 13, 1889.

l Application tiled June 6, 1888. Serial No. 276.200. (No model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE W. SoHwINN, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Dampers for Hot-Air Flues, which improvement is fully set forth in the following specification and accompanying drawings.

My invention relates to improvements in dampers for hot-air flues; and the object of the invention is to provide a damper which will permit of easy access thereto from the room to remove obstacles which may have entered the chimney and fallen upon the damper.

To attain the desired object the invention consists of a removable register, a flue provided with a damper, said damper having journals, inverted sockets in the flue to receive the journals of the damper, and detachable securing-caps for retaining the damper in place and permitting the displacement thereof when desired to remove an obstruction from the line.

The invention further consists in the novel construction and combination of parts, as hereinafter described.

Figure 1 represents a vert-ical sectional View of a damper for hot-air flues embodying my invention. Fig. 2 represents a bottom plan view thereof. Fig. 3 represents a detail view of a portion thereof.

Similar letters of reference indicate corresponding parts in the several gures.

Referring to the drawings, A designates a section of a hot-air flue which lits in the chimney and is provided with the register-opening B, in which the register C is placed.

D designates a box or collar embracing the upper edge of said flue-section, and provided with a groove D to receive the upper edge of the hue-section, and thus connect the adjacent parts and hold them in position. In one of the front corners of the collar or box is a socket or bearing E, and in the other corner is an open bearing-box E', which is adapted to be closed by a cap or cover E2, removably secured in place by-a screw or otherwise. In the opposite bearings E and E are received the journals or gudgeons]E on the damper F.

From this construction it will be observed that the cap or cover E2 may be removed from the outside by removing the register, which will permit the entrance of the hand to said cap or cover and allow it to be removed.

G designates a lug or ear formed on the upper face of the damper or secured therewith, and to this lug or ear is attached a knuckle or elbow I-I, having connected with it the rod J, which passes through openings in the Hue and register and is screw-threaded on its outer end, as at j, to receive a button or knob J.

From this construction it will be observed that by drawing the rod outward the damper is elevated, thus opening the flue and allowing the heat to pass upward, it being seen that by reason of the damper opening upwardly it does nothinder the operation of the register.

Should a piece of brick or other obstruction enter the flue and fall upon the damper, it would, as is evident, clog and prevent the operation of the damper. In order to remove such obstruction, it is merely necessary to detach the register from the fine. This then allows access through the register-opening of the flue to the damper, and the hand may then be inserted in the flue and unscrew the fastening which retains the journal of the damper in place, thus allowing the displacement of said damper and permitting the removal of the obstruction.

The damper may be easily restored and the cap reapplied through the register-opening.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination of a removable register, a flue provided with a damper, said damper having journals, inverted sockets in the flue to receive the journals of the damper, and a detachable cap for securing one of thc journals of the damper in one of the sockets and permitting the displacement thereof, substantially in thc manner and for the purpose described.

G. 1V. SCI-IWINN.

Titnessesz JOHN A. WIEDEESHEIM, A. P. J ENNINes. 

